diff --git a/webapp/views.py b/webapp/views.py
index c66ecd2..f72769c 100644
--- a/webapp/views.py
+++ b/webapp/views.py
@@ -136,6 +136,14 @@ class SignupFormViewSet(ModelViewSet):
         except ValidationError as err:
             return JsonResponse(status=400, data={"error": err.message})
 
+    def update(self, request, *args, **kwargs):
+        try:
+            schema = QUESTION_SCHEMA
+            validate(instance=request.data["questions"], schema=schema)
+            return super().update(request, *args, **kwargs)
+        except ValidationError as err:
+            return JsonResponse(status=400, data={"error": err.message})
+
     def get_queryset(self):
         if self.request.user.is_authenticated:
             return SignupForm.objects.filter(deleted=False).order_by("start_time")